There were reports of many more still trapped at the 51-story tower in Mexico City, according to MyFoxLA.com.
According to the Associated Press, the cause of the blast is still unclear. Mexican President Enrique Pena Nieto urged people not to speculate about what my have caused it. Some theories include an electrical fire, faulty air conditioning and a possible attack.
“We will work exhaustively to investigate exactly what took place, and if there are people responsible, to apply the force of the law on them,” Pena Nieto told reporters, Reuters reported.